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  3. December 2014

Re: Get Start Date of a Week Number

I would counter that the beauty of using week for groupings is that weeks are the only consistent calendar grouping we have. A week is 7 days. Always. Months vary, quarters vary, and years vary. If one is looking for trends and comparisons to make business decisions then consistent time frames are imperative. The idea of having short weeks at the beginning and ending of a year worries me.




On 12/1/2014 1:32 PM, rob@xxxxxxxxx wrote:
I wonder if there should be a YEAR_ISO function.

Keep in mind that it's possible to have dates with two different calendar
years in the same WEEK_ISO. 2014-12-31 and 2015-01-01 for example.
And it's possible to have two WEEK_ISO from totally different years like
WEEK_ISO 1 from 1997 and WEEK_ISO 1 from 2015.

I was thinking of grouping over more than one year.
... where WEEK_ISO=x and YEAR_ISO=y...
kind of thing.


Rob Berendt


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